Furuno FCV-582L User manual

Brand: Furuno

Model: FCV-582L

Type: User manual

COLOR LCD SOUNDER

MODEL

FCV-582L

9-52, Ashihara-cho,

Nishinomiya, Japan

Telephone: 0798-65-2111

Telefax: 0798-65-4200

Your Local Agent/Dealer

ll rights reserved.

PUB. No. OME-23590

FCV-582L

(

YOSH

)

FIRST EDITION :

PR. 1998

H : MAR. 13, 2001

Printed in Japan

iiiiiiiiiiiii

SAFETY INSTRUCTIONS

WARNING

Keep heater away from equipment.

A heater can melt the equipment’s power

cord, which can cause fire or electrical

shock.

Use the proper fuse.

Use only a 3A fuse. Use of a wrong fuse

can result in equipment damage and void

the warranty.

The TFT LCD is constructed using the

latest LCD techniques, and displays

99.99% of its pixels. The remaining 0.01%

of the pixels may drop out or blink, how-

ever this is not an indication of malfunc-

tion.

About the TFT LCD

WARNING

Immediately turn off the power at the

switchboard if water leaks into the

equipment.

Continued use of the equipment can cause

fire or electrical shock. Contact a FURUNO

agent for service.

Do not disassemble or modify the

equipment.

Fire, electrical shock or serious injury can

result.

Immediately turn off the power at the

switchboard if the equipment is emitting

smoke or fire.

Continued use of the equipment can cause

fire or electrical shock. Contact a FURUNO

agent for service.

Make sure no rain or water splash leaks

into the equipment.

Fire or electrical shock can result if water

leaks in the equipment.

ELECTRICAL SHOCK HAZARD

Do not open the equipment.

Only qualified personnel

should work inside the

equipment.

CAUTION

A warning label is attached to the

equipment. Do not remove the label.

If the label is peeling off or is illegible,

contact a FURUNO agent or dealer.

FOREWORD.......................................iii

MENU TREE ....................................... iv

SYSTEM CONFIGURATION....... v

PRINCIPLE OF OPERATION.... vi

OPERATIONAL OVERVIEW

1.1 Control Description ............................... 1

1.2 Indications, Markers .............................. 2

1.3 Turning On/Off the Power ..................... 3

1.4 Adjusting Tone and Brilliance ............... 3

1.5 Selecting a Display ................................ 3

1.6 Selecting Display Range........................ 7

1.7 Adjusting the Gain ................................. 7

1.8 Automatic Operation.............................. 8

1.9 Selecting Picture Advance

Speed ..................................................... 8

1.10 Erasing Weak Echoes .......................... 9

1.11 Measuring Depth ................................. 9

1.12 A-scope Display................................. 10

1.13 User Menu ......................................... 10

1.14 Suppressing Interference ................... 11

1.15 Suppressing Low Level Noise........... 11

1.16 Selecting Background and

Echo Colors ....................................... 11

1.17 Alarms................................................ 12

1.18 White Marker..................................... 13

1.19 Fine Adjustment of Gain in

Dual-Frequency Operation ................ 13

OPTIONAL MODE

2.1 Displaying the Optional Mode Menu .. 15

2.2 System Menu ....................................... 15

2.3 Demonstration Display ........................ 17

2.4 Bottom Level ....................................... 17

2.5 TVG Level........................................... 18

2.6 Echo Offset .......................................... 18

TABLE OF CONTENTS

INTERPRETING THE DISPLAY

3.1 Zero Line ............................................. 19

3.2 Fish School Echoes.............................. 19

3.3 Bottom Echo ........................................ 19

3.4 Surface Noise/Aeration........................ 20

MAINTENANCE &

TROUBLESHOOTING

4.1 Checking.............................................. 21

4.2 Cleaning the Display Unit ................... 21

4.3 Transducer Maintenance...................... 21

4.4 Replacing the Fuse............................... 21

4.5 Troubleshooting ................................... 22

4.6 Test....................................................... 23

4.7 Test Pattern .......................................... 23

4.8 Clearing the Memory........................... 24

SPECIFICATIONS....................... SP-1

INDEX ............................................Index-1

iii

A Word to FCV-582L Owners

Congratulations on your choice of the

FURUNO FCV-582L Color LCD Sounder.

We are confident you will see why the

FURUNO name has become synonymous

with quality and reliability.

For over 50 years FURUNO Electric Com-

pany has enjoyed an enviable reputation for

innovative and dependable marine electron-

ics equipment. This dedication to excellence

is furthered by our extensive global network

of agents and dealers.

This equipment is designed and constructed

to meet the rigorous demands of the marine

environment. However, no machine can per-

form its intended function unless operated and

maintained properly. Please carefully read and

follow the recommended procedures for op-

eration and maintenance.

We would appreciate hearing from you, the

end-user, about whether we are achieving our

purposes.

Thank you for considering and purchasing

FURUNO equipment.

FOREWORD

Features

The FURUNO FCV-582L is a dual-frequency

(50 kHz and 200 kHz) color LCD sounder.

Comprised of a display unit and a transducer,

the FCV-582L displays underwater conditions

in 16 colors (including background) on a

bright 6.5-inch color TFT (Thin Film Tran-

sistor) LCD.

The main features of the FCV-582L are

• Compact design permits installation where

space is limited.

• Bright 6.5-inch color LCD with tempera-

ture compensated tone and brilliance con-

trol.

• Wide variety of display modes: bottom

lock, dual frequency, marker zoom, bottom

zoom, nav data and graphic display.

• Automatic function permits unattended

adjustment of range and gain. The range

scale and gain automatically change to dis-

play the bottom in reddish-brown on the

lower half of the screen.

• Navigation data display (requires naviga-

tion data input from external navigator)

provides position, course, speed, depth,

temperature and waypoint data indications.

• Alarms: Bottom, Fish (bottom-lock, nor-

mal), Temperature (within, over range set).

• A-scope display discriminates bottom fish,

vital for bottom trawler and trap users.

• Universal 10.2–31.2 VDC power supply

consuming less than 20 W power.

MENU TREE

ESC

NOISE LIMITER (OFF, NL1, NL2, NL3)

CLUTTER (0 16) Default: 9

MARKER(VRM,WHITE,MARKER)

HUE (1

9) Default: 1

GAIN ADJ 200kHz (-20

+20) Default: 0

GAIN ADJ 50kHz (-20

+20) Default: 0

GO TO SYSTEM MENU (+)

SELF TEST ( )

USER

MENU (1, 2, 3)

DEPTH UNIT (m, ft, fa, pb)

SPEED UNIT (kt, MPH, km/h)

TEMP UNIT (°C, °F)

ZOOM MARK (OFF, ON)

F/A LEVEL (WEAK, MED, STRG)

TEMP GRAPH (OFF, ON)

LANG (English, , French,

Spanish, German, Italian)

POWER

Any

key

MENU (1, 2, 3)

NAV DSP (OFF, L/L, R/B, CSE)

NMEA (Ver1.5, Ver2.0)

BEARING (TRUE, MAG)

SPD SEL (OFF, OWN, NMEA)

TMP SEL (OFF, OWN, NMEA)

SPD ADJ (-50 +50) Default: 0

TMP ADJ (-20 +20) Default: 0.0

CLEAR MEMORY ( )

OPTIONAL MODE

Default settings

shown in bold.

SYSTEM MENU 2

MENU (1, 2, 3)

BASIC RANGE1 (15)

BASIC RANGE2 (30)

BASIC RANGE3 (60)

BASIC RANGE4 (120)

BASIC RANGE5 (200)

BASIC RANGE6 (400)

BASIC RANGE7 (1000)

BASIC RANGE8 (2500)

ZOOM RANGE (range: 7-2500, 30) (feet)

B/L RANGE (10, 20) (feet)

All basic ranges

in feet.

ECHO OFFSET (SIG LEV key 3 times)

TVG SELECT (ZOOM key 3 times)

BOTTOM LEVEL (ALARM key 3 times)

TEST PATTERN (BRILL key 3 times)

DISP SEL (GRA1,GRA2,DATA)

DRAFT(-20 +20) Default: 0

TX OUTPUT (MIN, MAX)

SYSTEM MENU 3

SYSTEM MENU 1

DEMO ( )

SYSTEM CONFIGURATION

Ship's mains

12–24 VDC

External equipment

(GPS navigator, etc.)

TRANSDUCER

Speed, temperature

sensor (option)

DISPLAY

UNIT

FCV-582L system configuration

The FCV-582L determines the distance be-

tween its transducer and underwater objects

such as fish, lake bottom or seabed and dis-

plays the results on its screen. It does this by

utilizing the fact that an ultrasonic wave trans-

mitted through water travels at a nearly con-

stant speed of 4800 feet (1500 meters) per

second. When a sound wave strikes an un-

derwater object such as fish or sea bottom,

part of the sound wave is reflected back to-

ward the source. Thus by calculating the time

difference between the transmission of a

sound wave and the reception of the reflected

sound wave, the depth to the object can be

determined.

The entire process begins in the display unit.

Transmitter power is sent to the transducer as

a short pulse of electrical energy. The electri-

cal signal produced by the transmitter is con-

verted into an ultrasonic signal by the

transducer and transmitted into the water. Any

returning signals from intervening objects

(such as a fish school) are received by the

transducer and converted into an electrical sig-

nal. The signals are then amplified in the am-

plifier section, and finally, displayed on the

screen.

The picture displayed is made up of a series

of vertical scan lines, one for each transmis-

sion. Each line represents a snapshot of what

has occurred beneath the boat. Series of snap-

shots are accumulated side by side across the

screen, and the resulting contours of the bot-

tom and fish between the bottom and surface

are displayed.

PRINCIPLE OF OPERATION

Underwater conditions and video sounder display

OPERATIONAL OVERVIEW

1.1 Control Description

All operations of the FCV-582L are carried out with the controls on the front panel of the

display unit. All controls respond immediately to your command and the unit emits a beep to

signify correct key sequence. (Invalid key input emits several beeps.)

SHIFT

ZOOM SIG LEV

BRILL ALARM

RANGE

MODE

ZOOM

DUAL

ZOOM

NAV

POWER

A-SCOPE

MARKER

ADVANCE

GAIN

Selects zoom mode. (p. 3)

Adjusts display brilliance

and tone. (p. 3)

• Rotate to adjust gain. (p. 7)

• Push to turn automatic

operation on/off. (p. 7)

Removes weak echoes.

(p. 9)

Selects picture advance

speed. (p. 8)

Sets alarms. (p. 12)

Turns A-scope

display on/off. (p. 10)

Selects range. (p. 7)

Selects display mode.

(p. 3)

Turns power on/off.

(p. 3)

PUSH

AUTO

• Shift display range.

(p. 7)

• Select menu options.

(p. 10)

• Shift VRM. (p. 9)

• Select menu items. (p. 10)

Removing cover

While pressing the center

of the cover with your

thumbs as illustrated, pull

the cover towards you to

remove it.

Figure 1-1 Controls

1.2 Indications, Markers

The figure below shows all indications and markers which may appear in the normal display.

The combination displays (normal display plus marker or zoom display) may additionally dis-

play the zoom marker.

Water

temperature*

Speed*

Noise Limiter

Transducer frequency

Alarm icon

Active alarm

Range scale

Variable range

marker (green)

w/depth readout

Depth

Color

bar

Water temperature

scale*

Minute marker

(yellow, blue,

30 sec. each)

Nav data*

(DEMO)

Demonstration

mode

Alarm zone

marker

35°15.000’ N

135°07.500’ E

22.6°C 12kt NL1 200k F/NM

49.6

39.8

Water temperature

marker (orange)*

* Requires appropriate sensor.

All indications and

markers are displaye

in white unless

noted otherwise.

Figure 1-2 Indications

1.3 Turning On/Off the Power

Press the POWER key to turn the power on/

off. When the unit is turned on it proceeds in

the sequence shown below.

Sounder

display

ROM and RAM

check; displayed for

several seconds.

** Program version

no.

ROM: OK

RAM: OK

PROGRAM No: 02522790**

200k

49.6

0.0

You may press any key to show

the sounder display immediately.

Figure 1-3 Start-up sequence

Note: Wait at least five sec. before reapply-

ing the power.

1.4 Adjusting Tone and Brilliance

1. Press the BRILL key. The tone and bril-

liance setting display appears.

TONE : 5

BRILL : 7

LOW– +HIGH

LOW

▼ ▲HIGH

Figure 1-4 Tone and brilliance

setting display

2. Press the [+] or [–] key to adjust display

tone.

3. Press the [▲] or [▼] key to adjust dis-

play brilliance.

Note 1: Location of arrow keys on the bril-

liance setting is opposite of same controls on

the control panel.

Note 2: Tone or brilliance must be adjusted

within about 10 seconds after pressing the

BRILL key or the tone and brilliance display

will be erased.

1.5 Selecting a Display

Six basic displays are available: nav (data or

graphic mode selectable on the system menu),

low frequency, dual frequency, high fre-

quency, zoom (marker zoom, bottom zoom,

bottom lock), and menu. (An A-scope display

is also available with the BRILL and ALARM

keys.)

1. Operate the MODE control to select a dis-

play mode.

2. For zoom mode, press the ZOOM key.

ZOOM MODE

▲

▼

BOTTOM LOCK

BOTTOM ZOOM

MARKER ZOOM

Figure 1-5 Zoom mode selection display

Normal display

Low frequency (50 kHz) display

The sounder uses ultrasonic pulses to detect

bottom conditions. The lower the frequency

of the pulse, the wider the detection area.

Therefore, the 50 kHz frequency is useful for

general detection and judging bottom condi-

tion.

50 kHz

200 kHz

Figure 1-6 Comparison of detection ranges

of 50 kHz and 200 kHz transducers

50k

49.6

0.0

Fish

school

Bottom

Figure 1-7 Typical 50 kHz display

High frequency (200 kHz) display

The higher the frequency of the ultrasonic

pulse the better the resolution. Therefore, the

200 kHz frequency is ideal for detailed ob-

servation of fish schools.

Dual-frequency display

The 50 kHz picture appears on the left; the

200 kHz picture on the right. This display is

useful for comparing the same picture with

two different transmitting frequencies.

50/200

49.6

0.0

50 kHz 200 kHz

picture picture

Figure 1-8 Dual-frequency display

Marker-zoom display

This mode expands selected area of the nor-

mal picture to full vertical size of the screen

on the left-half window. You may specify the

portion to expand by operating the VRM

(Variable Range Marker), which you can shift

with the [▲] or [▼] key. The area between

the VRM and zoom range marker is expanded.

The length of the segment is equal to one di-

vision of the depth scale.

14.7

28.2

Zoomed fish

school

Normal

display

Variable range

marker (green)

This section

is zoomed

Zoom marker

(yellow)

Marker-zoom

display

Fish

school

Figure 1-9 Marker-zoom display

plus normal display

Note : The zoom marker looks like white

when the background is blue.

Bottom-zoom display

This mode expands bottom and bottom fish

echoes two to five times to vertical size of the

screen, and is useful for determining bottom

hardness. A bottom displayed with a short

echo tail usually means it is a soft, sandy bot-

tom. A long echo tail means a hard bottom.

36.4

Normal

display

Zoom

marker

(yellow)

Bottom

Bottom-zoom display

Figure 1-10 Bottom-zoom display plus

normal display

Bottom-lock display

The bottom-lock display provides a com-

pressed normal picture on the right half of the

screen and a 5 or 10 meter (10 or 20 feet) wide

layer in contact with the bottom is expanded

onto the left half of the screen. This mode is

useful for bottom discrimination.

9.6

Fish

20.7

Bottom-

lock

display

Normal

display

Zoom marker (yellow)

Zoomed

fish

This section

is zoomed

Figure 1-11 Bottom-lock display plus

normal display

Note: The zoom marker is not displayed in

the default setting. It may be turned on in Sys-

tem menu 1. For further details see page 15.

Data display

This display provides navigation data in digi-

tal form. Date, time, position, course, speed,

depth, water temperature and waypoint data

can be shown. Requires nav data input and

appropriate sensors.

00. 065’N

130

00. 574’E

POS

143

15. 6kt

CSE SPD

69. 4

m 9. 3°C

DEP TMP

WP ABC

RNG 12nm

BRG 123. 4°

XTE 1. 23nm

Position

Course, speed

Depth,

temperature

Waypoint

Range to waypoint

Bearing to waypoint

Cross-track error

Figure 1-12 Data display

Enlarging a nav data indication

You can enlarge and display one of the data

indications as follows:

1. Press the [▲] or [▼] key to select the in-

dication you want to display. A blue cur-

sor circumscribes your selection. For

example, select the waypoint data win-

dow.

2. Press the [+] key to enlarge the data.

ABC

RNG

BRG

XTE

12.0

123. 4

1. 23

Figure 1-13 WP data window enlarged

3. To return to the full data display, press the

[–] key.

Graphic display

There are two types of graphic displays:

graphic display 1 and graphic display 2 , and

you can select which one to display on the

SYSTEM MENU1.

The graphic display 1 provides analog and

digital displays of cross-track error (XTE),

course and bearing. It is useful for monitor-

ing progress toward a waypoint. The XTE

scale in the center of the display, graduated in

increments of 0.1 nm, shows cross-track er-

ror, the dird/Xion and distance the boat is off

course. In the example below the XTE marker

(red) shows the boat is off course by 0.2 nm

starboard. Therefore you would steer left by

the same distance to return to course.

DEP

69.4

TMP

18. 1

°C

RNG

12.0

TRIP

76.8

ABC

SPD

16.8

1nm 1nm

BRG

248

CSE

323

Waypoint

Range to

waypoint

Depth

Speed

Tr ip

distance

Temperature

XTE

scale

Bearing to waypoint

Bearing

Course

indicator

Figure 1-14 a Graphic display 1

Resetting trip distance indication on graphic

displays

The trip distance indication displays the dis-

tance the boat has traveled. To reset the indi-

cation to zero, press both the [▲] and [▼] keys

together until the indication reads zero. (The

indication can also be reset by pressing one

of the arrow keys, in which case it takes about

five seconds.) Note that the trip indication is

reset to zero whenever the power is turned

off.

The graphic display 2 mainly provides ana-

log speed meter and cross-track error indica-

tion.

Speed

Trip

distance

Depth

Temperature

Ship's

position

Range to

waypoint

Waypoint

Ship's

heading

Bearing to

Waypoint

Bearing to

Waypoint relative

to ship's heading

Cross track error

Figure 1-14 b Graphic display 2

Selecting data or graphic display

Set the MODE control in the NAV position to

show the data display or the graphic display.

You can select which display to show on the

System menu 1, and the default setting is the

graphic display 1. For how to preselect the

display to show see page 15.

1.6 Selecting Display Range

The basic range and range shifting functions

used together give you the means to select the

depth you can see on the screen. The basic

range can be thought of as providing a “win-

dow” into the water column and range shift-

ing as moving the “window” to the desired

depth. Note that the RANGE control is inop-

erative in automatic operation. (See the next

page for details.)

Display

Shift

Figure 1-15 Range and display shift concept

Basic range selection

The basic range may be selected by the

RANGE control from the eight ranges shown

in the table below.

Table 1-1 Basic ranges (default settings)

inUt

egnaRyalpsiD

123456 7 8

sreteM501020408051300008

teeF51030602100200401000052

smohtaF3501020408

105

004

azarB/issaP35010305001002005

Operate the RANGE control to select a basic

range. Current selection is shown in the range

display window.

RANGE 5m

Figure 1-16 Range display

Range shifting

The basic range may be shifted with the [+]

and [–] keys. The shift display window, which

appears when the [+] or [–] key is operated,

shows current shift amount. Note that the

SHIFT keys and RANGE control are inop-

erative in automatic operation.

SHIFT 0m

Figure 1-17 Shift display

Note: The maximum shift range is 2500 feet

(500 m). However, the actual range will de-

pend on underwater conditions. In the worst

case echoes will not appear.

1.7 Adjusting the Gain

The GAIN control adjusts the sensitivity of

the receiver. Adjust the control so that a slight

amount of noise remains on the screen. Gen-

erally, use a higher gain setting for greater

depths and a lower setting for shallower wa-

ters. Note that the GAIN control is inopera-

tive in automatic operation.

Gain too high Gain proper Gain too low

Figure 1-18 Examples of proper and

improper gain

1.8 Automatic Operation

Automatic operation is useful when you are

preoccupied with other tasks and do not have

time to adjust the display.

How it works

The automatic function automatically selects

the proper gain and range scale according to

depth. It works as follows:

• The range changes automatically to locate

the bottom on the lower half of the screen.

It jumps to one step shallower range when

bottom echoes reach a halfway point of the

full scale from top and to one step deeper

range when they come to the lower edge

of the scale.

• The gain is automatically adjusted to dis-

play the bottom echo in reddish-brown (de-

fault color arrangement).

• Clutter level (on the User menu), which

suppresses low level noise, is automatically

adjusted.

Two types of automatic modes

Two types of automatic modes are available:

cruising and fishing. Cruising is for tracking

the bottom; fishing is for searching fish

schools. Since cruising uses a higher clutter

rejection setting than fishing, it is not recom-

mended for fish detection – weak fish echoes

may be deleted by clutter rejection.

How to enable automatic operation

1. Push the GAIN control. The auto mode

display appears.

AUTO MODE

▲

▼

OFF

CRUISING

FISHING

Figure 1-19 Auto mode display

2. Push the GAIN control again to select

Cruising or Fishing.

1.9 Selecting Picture Advance

Speed

The picture advance speed determines how

quickly the vertical scan lines run across the

screen. When selecting a picture advance

speed, keep in mind that a fast advance speed

will expand the size of the fish school hori-

zontally on the screen and a slow advance

speed will contract it.

1. Press the ZOOM and SIG LEV keys to-

gether. The following display appears.

▲

▼

ADVANCE

STOP

1/16

1/8

1/4

1/2

1/1

2/1

Figure 1-20 Picture advance

speed selection display

The fractions in the menu denote number

of scan lines produced per transmission.

For example, 1/8 means one scan line is

produced every 8 transmissions. STOP

freezes the display and it is convenient for

observing an echo.

2. Press the [▲] or [▼] key to select speed

desired.

1.10 Erasing Weak Echoes

Dirty water or reflections from plankton may

be painted on the display in green or light-

blue. These weak echoes may be erased as

follows:

1. Press the SIG LEV key. The following

display appears.

SIGNAL LEVEL

OFF

SL1

SL2

SL3

SL4

SL5

SL6

▲

▼

SIGNAL LEVEL

OFF

SL1

SL2

SL3

▲

▼

(At 16-color display)

(At 8-color display)

Figure 1-21 Signal level display

2. Press the SIG LEV key again to select sig-

nal level (echo color) to erase. The color

deleted disappears from the color bar and

is replaced with dark-blue color. SL1

erases the weakest echo; SL6 the light-

blue echo.

Weak

echoes

Signal level

adjusted

Figure 1-22 How SIG LEV works

1.11 Measuring Depth

The VRM (Variable Range Marker) functions

to measure the depth to fish schools, etc.

1. Press the [▲] or [▼] key to place the

VRM on an echo.

2. Read the VRM range just above the VRM.

200k

49.6

0.0

39.8

VRM (green)

Figure 1-23 How to measure depth

with the VRM

1.13 User Menu

The User menu has several functions which

require adjustment according to operating

conditions.

1. Select MENU with the MODE control.

0 -20 +20

1 1 9

OFF NL1 NL2 NL3

NOISE LIMITER

CLUTTER

AUTO 0 16

VRM WHITE MARKER

M ARKER

HUE

GAIN ADJ 200kHz

0 -20 +20

GAIN ADJ 50kHz

▲▼ : To select item

- +: To set condition

1/2

Figure 1-26 User menu

2. Press the [▲] or [▼] key to select menu

item. As you operate the [▲] or [▼] key,

the selected item and its current setting

appear in reverse video.

3. Press the [+] or [–] key to set condition.

4. Set the MODE control in another posi-

tion to close the menu.

1.12 A-scope Display

This display shows echoes at each transmis-

sion with amplitudes and tone proportional to

their intensities, on the right 1/3 of the screen.

It is useful for estimating the kind of fish

school and bottom composition.

32.3

A-scope

display

Normal

display

200k

0.0

Figure 1-24 A-scope display

1. Press the BRILL and ALARM keys to-

gether. The A-SCOPE selection display

appears.

A-SCOPE

OFF

▲

▼

Figure 1-25 A-scope selection display

2. Press the [▲] or [▼] key to select OFF or

ON.

1.14 Suppressing Interference

Interference from other acoustic equipment

operating nearby or other electronic equip-

ment on your boat may show itself on the dis-

play as shown in Figure 1-27.

To suppress interference, do the following:

1. Select MENU with the MODE control.

2. Select NOISE LIMITER.

3. Press the [+] or [–] key to select degree of

suppression desired; OFF, NL1, NL2 or

NL3. The higher the number the greater

the degree of suppression.

Interference from Electrical inteference

other sounder

Figure 1-27 Interference

Turn the noise limiter circuit off when no in-

terference exists, otherwise weak echoes may

be missed.

1.15 Suppressing Low Level

Noise

Light-blue dots may appear over most of

screen. This is mainly due to dirty water or

noise. This noise can be suppressed by ad-

justing CLUTTER on the User menu.

When the automatic mode is on, the clutter

suppression setting is fixed at AUTO. To sup-

press low level noise in manual sounder op-

eration do the following:

1. Select MENU with the MODE control.

2. Select CLUTTER.

3. Press the [+] or [–] key to select clutter

rejection level desired. The higher the

number the higher the degree of suppres-

sion. Note that weak echoes may not be

displayed when the clutter circuit is on.

Figure 1-28 Clutter appearance

1.16 Selecting Background and

Echo Colors

1. Select MENU with the MODE control.

2. Select HUE.

3. Press the [+] or [–] key to select hue num-

ber. (You can see the result of your selec-

tion on the display.)

Table 1-2 Background and echo colors

euH

.oN

roloCohcEroloCdnuorgkcaB

1roloc61eulb-muideM

2roloc8eulb-muideM

3roloc61eulb-kraD

4roloc8eulb-kraD

5roloc61etihW

6roloc8etihW

7roloc61kcalB

8roloc8kcalB

9seitisnetni8,emorhconoM

1.17 Alarms

Bottom alarm

The bottom alarm sounds when the bottom is

within the alarm range set. To activate the

bottom alarm the depth must be displayed.

Fish alarm

There are two types of fish alarms: bottom-

lock and normal. The bottom-lock fish alarm

sounds when fish are within a certain distance

from the bottom. The normal fish alarm

sounds when fish are within the preset alarm

range.

Water temperature alarm

There are two types of water temperature

alarms: IN and OUT. The IN alarm sounds

when the water temperature is within the range

set; the OUT alarm sounds when the water

temperature is higher than the range set. This

alarm requires water temperature data.

Activating/deactivating an alarm

1. Press the ALARM key to display the

alarm settings display and select alarm

desired.

BOTTOM OFF ON

ALARM ZONE 0 5

RANGE 5

FISH (NORMAL) OFF ON

ALARM ZONE 0 5

RANGE 5

FISH (B/L) OFF ON

ALARM ZONE 22 21

RANGE 1

TEMP OFF IN OUT

ALARM ZONE 32 37

RANGE 5

▲▼ : To select item

- + : To set condition

Figure 1-29 Alarm mode display

Table 1-3 Alarm width data

mralA

)m(htdiW

tluafeD

)m(gnitteS

mottoB99-15

lamroN-hsiF99-15

L/B-hsiFeulavL/B-11

NIpmeT99-15

TUOpmeT99-15

2. Press the [+] key to select on .

F/NM

Alarm

zone

Alarm

zone

marker

(Fish,

bottom

alarms

only)

Figure 1-30 Alarm zone

3. Press the [▼] key to set ALARM ZONE

4. Press the [+] or [-] key to change alarm

zone.

5. Press the [▼] key to set RANGE.

6. Press the [+] or [-] key to change range.

7. To deactivate an alarm, select OFF on the

ALARM MODE display.

Note: For fish alarm set “F/A LEVEL.”

See page 15.

Silencing the buzzer

The buzzer sounds whenever an alarm is vio-

lated. You can temporarily silence the buzzer

by pressing any key. However, the buzzer will

sound whenever the alarm setting is violated.

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Furuno FCV-582L User manual

Furuno FCV-582L User manual

Furuno FCV-582L User manual

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